Stacko™ · NPR Australia
Stacko™ blocks: certified support for mining workshops
Stacko™ is a polyurethane cribbing system that builds interlocking towers up to 60 tonnes and 150 cm, with an AS1170.0 certified load and a 3:1 safety factor. It replaces timber in mining workshops and on site. Made by NPR in Australia, distributed in Peru by Endeavant.
Why Stacko™
Polyurethane blocks with AS1170 certified load
Timber blocks splinter, crack and deform under repeated load, and nobody knows their real capacity. Stacko™ publishes its rating with the 3:1 safety factor included and tested as a full 150 cm tower, which makes it the certified alternative for mining equipment maintenance.
- Certified load ratingTested to AS1170.0 with a 3:1 safety factor.
- Interlocking layersEach layer locks into the one below: stable towers up to 150 cm.
- Built for the fieldOil, workshop chemicals, salt water, rodents and insects. No cracks, no rot.
- 30% lighter, no splintersOne block weighs 8 kg: safer for your crew to handle.
Comparison
Stacko™ versus timber and recycled plastic
Against timber and recycled plastic, Stacko™ is the only cribbing block with a known, certified safety factor, temperature range and deflection. Recycled plastic may claim a higher capacity, but without a safety factor or a tower test. For simple block-style support there is the solid Timba™ block.
| Attribute | Stacko™ | Recycled plastic | Timber |
|---|---|---|---|
| Safety factor | 3:1 | Unknown | Unknown |
| Tested temperature range | −50 a +40 °C | +25 °C | Unknown |
| Deflection at full load | < 2 % | Up to 20% | Unknown |
| Material | Virgin polyurethane | Unknown mix | Variable |
| Block weight | 8 kg | 12 kg | Variable |
| Storage | Outdoor or indoor (UV) | Indoor only | Indoor only |
| Tested as | Block and 150 cm tower | Single block only | Not tested |
System components
Stacko™ tower components
A Stacko™ tower combines block, base, supports, plates and accessories to suit the load. Every part is sold individually or in the Stacko™ start-up kit NPR05458-00, with 18 blocks, base, jack plate, top support and top plate, 3 V-blocks and packers.
Stacko™ block
510 × 150 × 150 mm · 8 kg
Standard base support
535 × 535 × 20 mm · mandatory
Standard top support
546 × 546 × 22 mm · high grip
Standard top plate
640 × 520 × 50 mm · 42 kg
Jack plate
393 × 250 × 25 mm · jacking base
V-block
Cylindrical loads Ø15–120 cm
Packers
2.5 / 5 / 10 cm for exact height
Safe build trolley
Build the tower away from the load
Single, double or triple tower
Three tower widths, by space and load
The width of a Stacko™ tower is set by how many blocks go in each layer, and each width has its own base, plate and top support. The standard tower always takes 3 blocks per layer and carries the most: 60 t up to 150 cm.
Configurations
Eight configurations by load type
Stacko™ blocks combine with plates, jack plate and V-blocks into eight standard configurations, from 13 t (single V-block) to 60 t (tower with top plate). Capacity is bearing area in cm² × 30 kg, always with at least 3 blocks per layer.
| Configuration | Capacity | Max load |
|---|---|---|
| 1 · Single block | 30 kg/cm² | 23 t |
| 2 · Tower + top plate | 100 kg/cm² | 60 t |
| 3 · Tower + top plate + jack plate | Ø250 mm | 60 t |
| 4 · Tower + top support | 30 kg/cm² | 60 t |
| 5 · Tower + plate + top support | 100 kg/cm² | 60 t |
| 6 · Tower + plate + V-block | Ø15–120 cm | 40 t |
| 7 · Tower + V-block | Ø15–120 cm | 20 t |
| 8 · Single V-block | Ø15–120 cm | 13 t |
Tested to AS1170.0 (2002), 3:1 safety factor, −50 °C to +40 °C (block temperature). Always carry out your own risk assessment.
Building the tower
How a Stacko™ tower is built
A Stacko™ tower is built in alternating layers of 3 blocks on the base support, up to 150 cm. Before loading, check the configuration and carry out your own risk assessment.
- Inspect the partsLook for damage or parts that need service.
- Base on firm groundSolid, level surface with 3 blocks in the slots.
- Crossed layersEach layer opposite to the one below, up to 150 cm.
- Top it for the loadTop support, plate, jack plate or V-block.
In operation
Stacko™ in workshops and sites
Stacko™ towers under shovel components, engines and haul truck drivetrains, built with the positioning trolley so nobody works under suspended loads. More cases in Stacko™ and Timba™ blocks for mine safety.
Video
Stacko™ cribbing blocks for mining
FAQ
Stacko™ FAQ
Can Stacko™ support haul trucks during maintenance?+
What is a Stacko™ block?+
How much load does a Stacko™ tower hold?+
Which standard certifies the load and how is it calculated?+
Why use Stacko™ instead of timber cribbing?+
What is the difference between Stacko™ and Timba™?+
Can I use 2 blocks per layer in the standard tower?+
What comes in the Stacko™ start-up kit?+
Where can I buy Stacko™ blocks in Peru?+
Also for your workshop
More NPR load support
Tray Support
Tray supports for CAT and Komatsu haul trucks.
Learn more
Timba™
600 to 1800 mm support blocks that replace timber.
Learn more
MineChock™
Polyurethane wheel chocks for mining equipment.
Learn more
Catálogo NPR
The full NPR line with part numbers.
Learn moreData sheet and quote
Get the Stacko™ data sheet
We email you the full brochure right away. Tell us the equipment and support height and we will put together the configuration and quote.
Powered in Perú by
Endeavant S.A.C.